The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1981
Filed:
Sep. 17, 1979
Applicant:
Inventor:
David E Armstrong, Royal Oak, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B31F / ;
U.S. Cl.
CPC ...
156205 ; 156210 ; 156469 ; 156470 ; 156471 ; 156474 ; 425369 ;
Abstract
An apparatus and method for providing permanent pipe sections in a foam-backed material that utilizes two rotating members which cooperate to form alternate ridges and valleys in the material after which the valley portions are bonded to a backing sheet so as to maintain the pipe sections in the material.